(12z^-4/z^7)^-2

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Solution for (12z^-4/z^7)^-2 equation: 


D( z )

z^7 = 0

(12*z^-4)/(z^7) = 0

z = 0

z^7 = 0

z^7 = 0

1*z^7 = 0 // : 1

z^7 = 0

z = 0

(12*z^-4)/(z^7) = 0

(12*z^-4)/(z^7) = 0

12*z^-11 = 0 // : 12

z^-11 = 0

z naleu017Cy do O

z = 0

z = 0

z in (-oo:0) U (0:+oo)

((12*z^-4)/(z^7))^-2 = 0

1/144*z^22 = 0 // : 1/144

z^22 = 0

z = 0

z in { 0} 

z belongs to the empty set

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